music

/ˈmjuːzɪk/
noun
1. vocal or instrumental sounds (or both) combined in such a way as to produce beauty of form, harmony, and expression of emotion.
“couples were dancing to the music”
synonyms: notes, strains, tones, chords, sound; More
2. the written or printed signs representing vocal or instrumental sound.
“Tony learned to read music”

Newton’s colour circle

Image | | Paul Greer

“In a mixture of primary colours, the quantity and quality of each being given, to know the colour of the compound.”


Newton's colour circle

from wiki – Throughout Opticks, Newton compared colours in the spectrum to a run of musical notes. To this purpose, he used a Dorian mode, similar to a white-note scale on the piano, starting at D. He divided his colour wheel in musical proportions round the circumference, in the arcs from DE to CD. Each segment was given a spectral colour, starting from red at DE, through orange, yellow, green, blew [sic], indigo, to violet in CD. (The colours are commonly known as ROY G BIV.)

The middle of the colours—their ‘centres of gravity’—are shown by p, q, r, s, t, u, and x. The centre of the circle, at O, was presumed to be white. Newton went on to describe how a non-spectral colour, such as z, could be described by its distance from O and the corresponding spectral colour, Y.

Study for Metastaseis, c. 1953.

Aside | | Paul Greer
La obra se encuentra basada en superficies regladas mediante continuos glissandi.
La obra se encuentra basada en superficies regladas mediante continuos glissandi.

“Metastaseis was inspired by the combination of an Einsteinian view of time and Xenakis’ memory of the sounds of warfare, and structured on mathematical ideas by Le Corbusier. Music usually consists of a set of sounds ordered in time; music played backwards is hardly recognizable. Messiaen’s similar observations led to his noted uses of non-retrogradable rhythms; Xenakis wished to reconcile the linear perception of music with a relativistic view of time. In warfare, as Xenakis knew it through his musical ear, no individual bullet being fired could be distinguished among the cacophony, but taken as a whole the sound of “gunfire” was clearly identifiable. The particular sequence of shots was unimportant: the individual guns could have fired in a completely different pattern from the way they actually did, but the sound produced would still have been the same. These ideas combined to form the basis of Metastaseis.”

 

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